Osterweiterung: Wie die Nato wortbrüchig wurde

Manfred Wörner, "The Atlantic Alliance and European Security in the 1990s", Rede an das Bremer Tabak-Kollegium, Brüssel 17. Mai 1990.

Unclassified U.S. Department of State, Case No. M-2006-01499, Doc. No. C1753698, 06-15-2016.

Unclassified U.S. Department of State, Doc. Nr. 1993MOSCOW33021, 10. April 2000.

The White House, Washington, Memorandum of Conversation 0568, v. 11. Januar 1994, Clinton Library.

Horst Teltschik, Russisches Roulette, S. 111.

Klaus von Dohnanyi, "Russland im Visier", Die Zeit Nr. 26/2019 v. 19. Juni 2019.

Svetlana Savranskaya, T. Blanton, What Gobachev heard, Declassified documents show security assurances against NATO expansion to Soviet leaders from Baker, Bush, Genscher, Kohl, Gates, Mitterand, Thatcher, Major, and Woerner.

Document 01, U.S.Embassy Bonn Confidential Cable to Secretary of State on the Speech oft he German Foreign Minister: Genscher Outlines His Vision of a New European Architecture, 1990-02-01, U.S. Department of Stae, FOIA Reading Room. Case F-2015 10829

Document Nr. 6, Record of conversation between Mikhail Gorbachev and James Baker in Moscow (Excerpts), 1990-02-09, Gorbachev Foundation Archive, Fond 1, Opis 1.

Document 18, Report of conversation between Gorbachev and James Baker in Moscow, 1990-05-18, Gorbachev Foundation Archive, Fond 1, Opis 1.

Document 22, Letter from Mr. Powell to Mr. Wall: Thatcher-Gorbachev memorandum of conversation, 1990-06-08, Foreign and Commonwealth Office. Documents on British Policy Overseas, series III, vol. VIII: German Unification, 1989-1990.